Similarly Violent Anime/Manga/Mangaka

This manga reminds me of the bloody executions seen in Fist Of The North Star - I have loved that movie since the first time I saw that - It was the first time I ever saw anything like that - Those mangaka remain ahead of their time and are cutting edge in my humble opinion - Honorable God-like supernatural ninjas - Better than all the hentai and panchira in the world combined - I would be interested to know of others with similarly graphic violence as their style - If you know of any I would want to promote them.